html {
    font-family: sans-serif;
    -ms-text-size-adjust: 100%;
    -webkit-text-size-adjust: 100%
}

html,
body,
div,
span,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
abbr,
address,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
samp,
small,
strong,
sub,
sup,
var,
b,
i,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
article,
aside,
canvas,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section,
summary,
time,
mark,
audio,
video {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    font-size: 100%;
    vertical-align: baseline;
    background: transparent
}

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
nav,
section,
summary {
    display: block
}

audio,
canvas,
progress,
video {
    display: inline-block;
    vertical-align: baseline
}

audio:not([controls]) {
    display: none;
    height: 0
}

[hidden],
template {
    display: none
}

a {
    background: transparent;
    text-decoration: none;
}

a:active,
a:hover {
    outline: 0
}

abbr[title] {
    border-bottom: 1px dotted
}

b,
strong {
    font-weight: bold
}

dfn {
    font-style: italic
}

mark {
    background: #ff0;
    color: #000
}

sub,
sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline
}

sup {
    top: -0.5em
}

sub {
    bottom: -0.25em
}

img {
    border: 0
}

svg:not(:root) {
    overflow: hidden
}

figure {
    margin: 1em 40px
}

hr {
    box-sizing: content-box;
    height: 0
}

pre {
    overflow: auto
}

code,
kbd,
pre,
samp {
    font-family: monospace, monospace;
    font-size: 1em
}

button,
input,
optgroup,
select,
textarea {
    margin: 0
}

button {
    overflow: visible;
    outline: none;
    border: none;
    background: none;
    list-style-type: none;
}

input:focus,
button:focus {
    outline: 0;
}

input:active,
button:active {
    outline: 0;
}

input:visited,
button:visited {
    outline: 0
}

textarea {
    overflow: auto
}

ul,
li,
dl,
dt,
dd {
    list-style: none;
}

.float-left {
    float: left
}

.float-right {
    float: right
}

.float-clear:after {
    content: "";
    display: block;
    clear: both
}

html {
    height: 100%;
}

body {
    min-width: 320px;
    font-family: 'PingFang SC', 'STHeitiSC-Light', 'Helvetica-Light', arial, sans-serif, 'Droid Sans Fallback';
    font-size: 16px;
    height: 100%;
    background: #fff;
}

div {
    box-sizing: border-box
}

html {
    font-size: 14px
}

@media screen and (min-width:321px) and (max-width:375px) {
    html {
        font-size: 16px
    }
}

@media screen and (min-width:376px) and (max-width:414px) {
    html {
        font-size: 18px
    }
}

@media screen and (min-width:415px) and (max-width:639px) {
    html {
        font-size: 20px
    }
}

@media screen and (min-width:640px) and (max-width:719px) {
    html {
        font-size: 24px
    }
}

@media screen and (min-width:720px) and (max-width:749px) {
    html {
        font-size: 28px
    }
}

@media screen and (min-width:750px) and (max-width:799px) {
    html {
        font-size: 30px
    }
}

@media screen and (min-width:800px) {
    html {
        font-size: 48px
    }
}